And when those come to you who believe in Our verses, say, “Peace be upon you. Your Lord has decreed upon Himself mercy: that any of you who does wrong out of ignorance and then repents after that and corrects himself – indeed, He is Forgiving and Merciful.”
Meaning:-
Decreed: order, command, rule, dictate, pronounce, proclaim, ordain; direct, decide, determine
Ignorance: lack of knowledge, understanding, or information about something